Filter
Top Products
Table 22. Intervention Required Conditions relating to a Virtual Tape Server in the Library (continued)
Intervention Required Condition Resolution Actions
Message
VTS Controller degraded. Error code yyyyy. Call
service. (VTS z)
Probable Cause
A VTS redundant component has failed. Operation of the
VTS is continuing.
1. Contact your service representative.
Message
VTS requested that device xxx be made unavailable
but a mount/demount is in progress. (VTS z)
Probable Cause
The VTS determined that device xxx should be made
unavailable; however, the Library Manager found that a
mount or demount was in process and could not mark the
device as unavailable.
1. Contact your service representative.
Virtual Tape Server Recovery Actions
In the event a Virtual Tape Server is not usable either due to interruption of utility or
communication services to the site or through significant physical damage to the
site and/or the Virtual Tape Server itself, access to the data managed by the Virtual
Tape Server is restored through automated processes designed into the product.
The recovery process assumes that the only available elements for recovery are the
stacked volumes themselves and further assumes that only a subset of them are
undamaged after the event.
Although the recovery process is initiated by a service representative, there are
some customer related actions that are necessary before the recovery can begin.
The customer related actions are:
v If the 3494 and Virtual Tape Server are still functional, ask the service
representative to perform a Force Migrate operation through the library manager
service panel. This will ensure that all data has been moved from the Tape
Volume Cache to a stacked volume.
v Remove the undamaged 3590 stacked volumes from the 3494 Tape Library that
is no longer usable.
v Take the volumes to another 3494 location which has an empty Virtual Tape
Server.
v Inform the service representative that the recovery process can begin.
There are two key functions designed into the Virtual Tape Server system to support
recovery.
v Automatic Virtual Tape Server database backup
The Virtual Tape Server controller maintains a database of information about the
location and status of logical volumes on the stacked volumes it manages. When
a stacked volume has been filled with logical volumes, a backup of the entire
database is placed at the end of the filled stacked volume. The database
contains a time and date stamp that identifies when the backup was performed.
v Automatic database recovery
302 Magstar 3494 Tape Library Operator Guide
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|